ARCH is a browser-based architecture designer for cloud and network diagrams. It runs locally, stores work on-device, and supports exports to PNG, SVG, PDF, and .arch files.
ARCH is a browser-based architecture designer for cloud and network diagrams. It combines a drag-and-drop component catalog, routed connections, grouping tools, and export options so teams can model production-style infrastructure without installing a desktop app or setting up a backend.
The app is local-first and private by default: diagrams are stored in the browser, the editor works offline after the first load, and the site says it does not host, sync, or view your work. A separate Visualize page extends the product with file-based data exploration and diagram views for common structured formats such as JSON, YAML, Terraform HCL, GraphQL, and protobuf.
Build cloud and network diagrams from a searchable catalog of prebuilt components instead of drawing generic boxes. The catalog includes AWS, Azure, Google Cloud, IBM Cloud, Oracle Cloud, Alibaba Cloud, Huawei Cloud, generic networking, and on-premise components.
Connect nodes with orthogonal routing, automatic arrow placement, parallel offsets, and edge labels that stay attached as you move items around. Routes are recomputed as the canvas grows to keep larger diagrams readable.
Group resources into regions, VPCs, subnets, and availability zones with custom borders, fills, nesting, and collapse controls. This makes isolation boundaries easier to show in architecture reviews.
Use marquee select, shift-click, Ctrl/Cmd+A, bulk style edits, and command-palette actions like select connected or same vendor. The editor is designed for keyboard-heavy refactoring and diagram cleanup.
Export diagrams as PNG, SVG, or PDF, including A4 layout options, and capture full diagrams at up to 4K resolution. The site also offers portable workspace export and import through a single .arch file.
Open the Visualize page to auto-detect JSON, YAML, TOML, XML, CSV, Terraform HCL, GraphQL, protobuf, and more, then render them as explorer, flow, dependency, mind map, table, stats, treemap, sunburst, diff, JSONPath, formatted code, or inferred schema views.
Use ARCH to map cloud services, subnets, and trust boundaries when you need a diagram that looks close to the real environment rather than a generic block chart.
Use the isolation and routing tools to document regions, VPCs, subnets, and availability zones for reviews, onboarding, or internal design docs.
Use the Visualize page to turn structured files into explorer views, graphs, tables, or schemas when you need a quick way to inspect JSON, YAML, Terraform, or similar data.
Use the browser-based editor for quick diagram edits on a laptop or while offline, then export PNG, SVG, PDF, or .arch when you need to share the result.
Use command-palette actions, snapshots, and bulk editing when a diagram has many nodes and needs cleanup, regrouping, or repeated style changes.
No. ARCH is browser-based and local-first, so you can open the editor and start without creating an account. The source also says the work is auto-saved locally.
ARCH stores diagrams in the browser’s IndexedDB and works offline after the first page load. The site also notes that exports work offline once the app has loaded.
Yes. The product page says you can export an entire workspace as a single .arch file and import it elsewhere. The visual export formats listed are PNG, SVG, and PDF.
The main architecture editor is for diagramming cloud and network systems with a component catalog, routing, grouping, and exports. The separate Visualize page is for loading data files such as JSON, YAML, TOML, XML, CSV, Terraform (HCL), GraphQL, and protobuf to explore them as diagrams and views.
The source highlights individual use in a browser and mentions projects, checkpoints, named snapshots, and a command palette, but it does not describe collaboration features or shared editing.
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